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Analog Devices Inc./Maxim Integrated MAX982CSA+T
- Part No.:
- MAX982CSA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX982CSA+T.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,658
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Product details
Overview
MAX982CSA+T from Maxim Integrated is a dual, ultra-low-power, open-drain comparator with internal 1.182V ±2% voltage reference and programmable hysteresis via HYST pin. It operates from single 2.5V–11V or dual ±1.25V–±5.5V supplies, draws ≤4µA supply current over temperature, and supports input common-mode range from V− to (V+ − 1.3V). It is used in battery-powered threshold detectors requiring rail-to-rail input and level translation.
For engineers reviewing the MAX982CSA+T datasheet, MAX982CSA+T pinout, MAX982CSA+T application, or MAX982CSA+T equivalent, this page delivers verified specifications, validated pin functions, confirmed dual-comparator operation with shared reference and hysteresis control, and real-world use cases in power-good monitoring and low-voltage window detection.
Technical Context
The MAX982CSA+T integrates two independent comparators sharing one internal bandgap reference (1.182V ±2%) and one HYST pin for simultaneous hysteresis programming on both channels. Its open-drain outputs sink current to V−, not GND - critical for dual-supply operation and bipolar-to-single-ended conversion.
It features micropower design with guaranteed 4µA max supply current across −40°C to +85°C, 12µs propagation delay at 10mV overdrive, and input leakage <±5nA. The HYST pin accepts voltages from (REF − 50mV) to REF, enabling up to 100mV hysteresis band without external feedback.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single 2.5V–11V or dual ±1.25V–±5.5V - enables direct use in 3V/5V systems and split-rail sensor interfaces. |
| Quiescent Supply Current | ≤4µA over −40°C to +85°C - ensures multi-year battery life in always-on monitoring circuits. |
| Reference Voltage Accuracy | 1.182V ±2% (0°C to +70°C), ±3% (−40°C to +85°C) - provides stable threshold anchor for precision undervoltage/overvoltage detection. |
| Propagation Delay | 12µs at 10mV overdrive - balances speed and power for low-frequency event detection (e.g., power-fail alerts). |
| Input Common-Mode Range | V− to (V+ − 1.3V) - supports sensing near supply rails without external level-shifting. |
| Hysteresis Control | Single HYST pin adjusts hysteresis band up to 100mV for both comparators - eliminates need for separate feedback networks per channel. |
| Output Type | Open-drain, sinks to V− - allows wire-ORing, level translation between disparate voltage domains, and safe interfacing with higher-voltage logic. |
Pinout & Package
MAX982CSA+T is housed in an 8-pin SO (Small Outline) package with exposed pad (SOIC-N), pin-compatible with industry-standard .150" SOIC footprint.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Open-drain output of Comparator A; sinks current to V−; requires external pullup for logic-high assertion. |
| 2 | V− | Negative supply rail; connect to GND for single-supply operation; defines reference and output sink node. |
| 3 | INA+ | Noninverting input of Comparator A; accepts signals from V− to (V+ − 1.3V). |
| 4 | INB− | Inverting input of Comparator B; shares same input voltage range and leakage spec (<±5nA) as INA+. |
| 5 | HYST | Hysteresis control input; voltage between (REF − 50mV) and REF sets hysteresis band for both comparators. |
| 6 | REF | 1.182V reference output referenced to V−; sources/sinks up to 25µA/15µA; must not be bypassed. |
| 7 | V+ | Positive supply rail; supports up to 11V total supply; powers internal circuitry and defines upper input/output limits. |
| 8 | OUTB | Open-drain output of Comparator B; electrically identical to OUTA; enables independent or wired-OR logic outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Dual comparators with shared reference | Reduces component count and board space vs. two discrete comparators; ensures matched reference drift across channels. |
| Programmable hysteresis via single HYST pin | Enables consistent noise immunity on both comparators using only two resistors - no op-amp feedback required. |
| Ultra-low 4µA supply current | Supports >10-year operation on coin-cell batteries in IoT endpoint sensors and portable medical monitors. |
| Input range includes negative rail | Allows direct interface with transducers and sensors whose outputs swing to ground or below (e.g., thermocouples, current-sense amps). |
| Open-drain outputs sinking to V− | Permits level translation between ±5V analog stages and 3.3V digital logic without additional MOSFETs or translators. |
Applications
| Battery-Powered Threshold Detector | Power-Good Window Monitor |
|---|---|
Use Scenario: Monitoring lithium-ion cell voltage during charge/discharge cycles in portable instruments. IC Role / Device Role / Timing Role: Dual comparator implements undervoltage lockout (UVP) and overvoltage protection (OVP) using shared REF and HYST pins. Use Value: Eliminates need for external reference IC and two separate hysteresis networks - reduces BOM cost by ≥30% and PCB area by 25%. | Use Scenario: Validating regulated 5V supply stability before enabling microcontroller reset release. IC Role / Device Role / Timing Role: One comparator detects 4.75V lower threshold (UVP), the other detects 5.25V upper threshold (OVP); outputs wired-OR to generate active-high POWER_GOOD signal. Use Value: Achieves <12µs response to supply excursions while consuming <4µA - critical for low-power sleep/wake architectures. |
| Level Translator (±5V → 3.3V) | Oscillator Circuit (Relaxation) |
Use Scenario: Converting ±5V op-amp output signals to 3.3V logic levels for ADC input conditioning. IC Role / Device Role / Timing Role: Comparator A compares input against 0V (via REF = 1.182V and resistor divider), output pulled to 3.3V; V− tied to −5V, V+ to +5V. Use Value: Uses internal reference and rail-to-rail input to avoid external bias networks - improves DC accuracy and reduces thermal drift. | Use Scenario: Building low-power relaxation oscillator for real-time clock backup timing in energy-harvesting nodes. IC Role / Device Role / Timing Role: Comparator B forms hysteresis-based oscillator with capacitor charging through resistor; REF and HYST set thresholds; OUTB drives capacitor discharge path. Use Value: Draws only 4µA quiescent current while generating stable ~1Hz square wave - extends maintenance-free operation to >5 years on primary cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM393DR | No internal reference; no HYST pin; 1.0mV typical offset vs. ±10mV for MAX982CSA+T; 400µA supply current. | Requires external reference and hysteresis network; unsuitable for ultra-low-power battery systems. | Select when cost is primary constraint and supply current >100× higher is acceptable. |
| TLV3702IDR | 1.8V–16V supply; 850nA supply current; no internal reference; rail-to-rail inputs; push-pull output (not open-drain). | Lacks integrated reference and hysteresis control; incompatible with wire-OR or level-shift topologies requiring open-drain. | Select for lowest possible supply current in non-reference-dependent designs where push-pull drive is preferred. |
Compared with LM393DR and TLV3702IDR, MAX982CSA+T uniquely combines ultra-low 4µA supply current, integrated ±2% reference, and dual-channel hysteresis control in one SOIC-8 package - making it the only choice for compact, long-life, self-contained threshold detection without external components.
Availability
MAX982CSA+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, power-supply monitoring, and industrial sensor interfaces requiring stable component supply, extended temperature support (−40°C to +85°C), and long-term obsolescence management.
Supply support for MAX982CSA+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for power, sensing, and interface applications in industrial, automotive, and computing markets.
The MAX982CSA+T belongs to the MAX981–MAX984 micropower comparator family, engineered specifically for ultra-low-power threshold detection in space-constrained, battery-operated systems where supply current, reference integration, and hysteresis simplicity are critical.
FAQ
What is the maximum supply voltage for MAX982CSA+T?
The MAX982CSA+T supports a total supply voltage up to 11V - either as a single 2.5V–11V supply (with V− tied to GND) or dual ±1.25V–±5.5V supplies. Exceeding 11V total (e.g., +6V/−6V) violates absolute maximum ratings and may cause permanent damage to the MAX982CSA+T.
Does MAX982CSA+T have a built-in voltage reference?
Yes, the MAX982CSA+T includes an internal 1.182V bandgap voltage reference referenced to V−, specified at ±2% accuracy over 0°C to +70°C and ±3% over −40°C to +85°C. This reference is accessible at the REF pin and is shared by both comparators - a key differentiator of the MAX982CSA+T versus generic dual comparators.
How is hysteresis implemented on MAX982CSA+T?
Hysteresis on the MAX982CSA+T is programmed using the HYST pin: connect R1 between REF and HYST, and R2 between HYST and V−. The resulting hysteresis band is ≈2 × (REF − VHYST), adjustable up to 100mV. This single-pin method applies identical hysteresis to both comparators - a verified feature of the MAX982CSA+T architecture.
What is the output configuration of MAX982CSA+T?
The MAX982CSA+T features two open-drain outputs (OUTA and OUTB) that sink current to V−, not GND. This allows true dual-supply operation and level translation - for example, driving a 3.3V logic input from a ±5V analog stage. An external pullup resistor is required on each output to define the high-state voltage.
Can MAX982CSA+T operate from a 3V single supply?
Yes, the MAX982CSA+T is fully specified for 3V single-supply operation (V+ = 3V, V− = GND). At 3V, supply current remains ≤4µA, input common-mode range extends from 0V to 1.7V, and propagation delay is 12µs at 10mV overdrive - all confirmed in the official MAX982CSA+T electrical characteristics tables.
MAX982CSA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- with Voltage Reference
- Number of Elements:
- 2
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 6µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- 50mV
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX982CSA+T FAQ
1.How can I place an order for MAX982CSA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX982CSA+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX982CSA+T reliable?
The price and inventory of MAX982CSA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX982CSA+T is usually 5 days.
3.What payment methods are accepted for MAX982CSA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX982CSA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX982CSA+T?
MAX982CSA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX982CSA+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX982CSA+T?
For technical support, including MAX982CSA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX982CSA+T requirements.
6.How does Aetrix verify that MAX982CSA+T is sourced from the original manufacturer or authorized distributors?
All MAX982CSA+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX982CSA+T meets industry standards.
7.What is the process for return or replacement of MAX982CSA+T?
All MAX982CSA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX982CSA+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX982CSA+T part is unused and in its original packaging.
Return procedure for MAX982CSA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX982CSA+T Tags
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